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An Allele-specific Gene Expression Assay to Test the Functional Basis of Genetic Associations
Published on: November 3, 2010
ABO genes are differentially distributed in socio-economic groups in England
Nature
|June 9, 1983
Summary
Genetic differences in blood type ABO phenotypes correlate with social class in England. Individuals with blood type A are more common in higher social classes, while type O is less common, suggesting a link between genetics and social stratification.
Area of Science:
- Human genetics
- Social stratification
- Population genetics
Background:
- Theoretical considerations suggest genetic differentiation within socially stratified human populations.
- Empirical evidence for such genetic differences, particularly concerning blood group phenotypes, is lacking.
- Understanding genetic influences on social structures is crucial for population health and evolutionary studies.
Purpose of the Study:
- To investigate potential genetic differences in blood group phenotype distributions across socio-economic groups in England.
- To test whether ABO and Rhesus blood group phenotypes are randomly distributed with respect to social class.
- To explore the relationship between genetic markers and social stratification.
Main Methods:
- Analysis of large blood donor datasets from two distinct regions in England (south-west England and Yorkshire).
- Categorization of participants into socio-economic groups based on occupational classification (social classes I-V).
- Statistical comparison of ABO and Rhesus blood group phenotype frequencies across different social classes.
Main Results:
- A statistically significant non-random distribution of ABO blood group phenotypes was observed across social classes.
- Blood type A phenotype was significantly more frequent in higher social classes (I and II), while type O was less frequent.
- The converse pattern was observed in lower social classes (III-V).
- No significant differences in Rhesus (Rh+ and Rh-) phenotype distribution were found between social classes.
- An individual with blood type A had approximately a 15% higher probability of belonging to social classes I and II.
Conclusions:
- The observed association between ABO blood group phenotypes and socio-economic status is unlikely due to sampling, historical, or migration effects.
- The findings suggest a likely pleiotropic effect of ABO alleles, or closely linked genes, influencing attributes related to occupational type, social mobility, and social class.
- This study provides empirical evidence for genetic differentiation correlating with social stratification in human populations.
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